Control device for pasting devices



Sept. 16, 1930. e. HARTMAN CONTROL DEVICE FOR PASTING DEVICES Filed June 24. 1927 2 Shani-Sheet 1 M Wm 3N ,T A H E G .R 0 E G Sept. 16, 1930.

" e. HARTMAN CONTROL DEVICE FOR PASTING DEVICES I Filed Jun'e 24. 192'? 2 Sheets-Sheet 2 NV mu Q gwve'nlioo Geo/2&5 HARTMAA;

Patented Sept. 16, 1930 UNITED STATES GEORGE HARTMAN, OF CINCINNATI, OHIO CONTROL DEVICE FOR PASIING DEVICES Application filed .Tune 24,

This invention relates to improvements in a device for pasting the bottoms, particularly satchel bottoms, of paper bags.

An object of this invention is to provide a device, as an attachment, for paper bag bottoming machines that will prevent the paste or glue from being attached to the pressure roll and subsequently applied to the wrong side of the bag and rendering said bag unfit for use. v

Another object of this invention is to provide a device as set forth above that is inexpensive to manufacture and may be economically. attached to the present bag bottomers.

These and other objects are attained by the means described herein and disclosed in the accompanying drawings, in which:

Fig. 1 is a side elevational view of a portion of a bag bottomer embodying this invention.

Fig. 2 is an enlarged sectional view taken on line 2-2 of Fig. 1.

Fig. 3 is a sectional view taken on line 3-3 of Fig. 2.

Fig. 4 is an enlarged sectional view taken on line 44 of Fig. 2.

Fig. 5 is a plan view of a bag which is to have its bottom pasted.

The bag bottomer, to which a device of this invention may be applied, comprises a frame upon which are suitably journaled shafts 11, 12, 13 and 14. Each of the shafts 11, 12, 13 and 14 have respectively keyed or suitably secured to it a pair of pulleys or drums 15, 16, 17 and 18. The pulleys or drums are positioned at opposite sides of the frame 10 whereby a way is provided between them.

Four endless belts extend about the pulleys in such a manner as to provide a pair of belts at each side of the machine moving in ope posite directions to one another, for instance belt 19 extends about pulleys 15 and 17 while belt extends about pulleys 16 and 18. The driving shafts 11 and 12 are geared so as to r0- tate in opposite directions, namely, shaft 11 together with pulleys 15 and 17, shaft 13 and belt 19 rotate in a counter-clockwise direction, while shaft 12 together with pulleys 16 and 18, shaft 14 and belt 20 rotate in a clock wise direction. It will therefore be seen that ing is a description of a bag bottoming machine and forms no part of this 1nvent1on.

1927. Serial No. 201,229.

the lower portion 21 of the belt 19 will move from left to right, as seen in Fig. 1, while the upper portion 22 of the belt 20 also moves from left to right as seen in Fig. 1. From the foregoing it will be noted that anything introduced between these belts at the left hand end of Fig. 1 will be carried to the right .hand end between the saidbelts 19 and 20.

A secondary frame 23 is mounted on the frame 10 ahead of the pulleys 15 and 16 and carries at its upper end a paste box or holder 24. Rotatably mounted above the paste box and arranged to dip into the paste in the box is a paste dispensing roller 25 the periphery of which contacts a paste transferring roller 26. The roller 25 carries the paste upon its periphery and transfers it to the roller 26. A picker and delivery drum 27 is also mounted on the frame 10 ahead of the secondary frame 23, which drum 27 has mounted on its periphery picker fingers 28 for picking a bag or sack'tube from a stack and passing it below folding rollers 29 onto the machine table 30 andbetween the belts 19 and 20. The forego- The device of this invention comprises a shaft 31 oscillatably mounted in the secondary frame 23 from whichshaft 31 an operating finger 32 extends. The lower end 33 of'the finger 32 lies upon the upper surface of the work table 30 between the arms of an inclined bridge 34 mounted on the table 30. Mounted'on one end of the shaft 31 is a lever 35 slidably connected to a bar 36. The upper end of the bar 36 has formed therein an elongated perforation 37in which the pivot 38, of the lever 35 and bar 36 is positioned, whereby, the lever 35 may depress the bar 36 but will not raise it until the lost motion between the lever 35 and bar 36 is taken up. Thebar 36'has one end of a dog 39 pivotally secured to it at 40. The dog 39 is pivotally mounted at 41 to the secondary frame 23. The oppo site end 42 of the dog 39 is adapted to cooperate with a stop-43 carriedby across slide 44 for controlling the said cross slide which is slidably mounted ona shaft 45. The shaft 45 and the folding rollers 29 are adapted to rotate in unison with the conveyor shafts 11 m and 12. A paper bag upon passing beneath the folding rolls will pass over the bridge 34 and raise the operating finger 33. This raising of the finger 33 causes the lever 35 to be actuated in a counter-clockwise direction and because of the slot 37 in the bar 36 does not actuate the said bar 36. However when in the position shown in Fig. 1 the end 42 of the dog-39 is raised free of the stop 43 carried by the cross head 44. The purpose of this will be explained later. i

The cross slide 44 is provided with an extension or rod 46 which is pivotally secured at 47 to one arm 48 of a bell crank 49. The other arm 50 of the bell crank 49 is bifurcated and receives between its arms. 51 and 52' a cam. plate 53. The cross slide ,44 has secured to it one end 54 of a spring the other end 55 of which spring is secured to the frame 10. The cross slide 44 has formed therein an elongated perforation 56 in which shaft 45 is received. Mounted upon the shaft 45 and outside of the cross head 44 is a cam 57 which co-operateswith a roller 58 carried by said cross slide for returning the cross slide to its normal position after the spring 54 has retracted it. c

Shaft 11 hasmounted on it intermediate the pair of pulleys 15 a pasting die 59 which contacts the periphery of the transferring roller 26 for receiving a certain quantity of paste which it applies to the bottom 60 and tab 61 of a bag or sack 629.

The shaft 12 has mounted on it intermediate the pair of pulleys 16 a pressure plate shown generally at 62. The pressure plate 62 is secured to the shaft 12 so as to move with the shaft 12 and has formed integrally therewith an arm 63. A shaft 64 is journaled in the arm 63 and extends beyond one of the pulleys 16. The shaft 64 may be termed a rock shaft or oscillatable shaft and has links 65 and 66 secured to it intermediate the pair of pulleys 16. The links 65 and 66 are pivotally secured to arms 67 and 68 which arms 67 and 68 are in turn pivotally secured to a pressure head 69 carried by the pressure plate 62. The pressure head 69 is adapted to be depressed below the periphery of the pulleys 16- and out of contacting distance with the pasting die 59. The pressure head 69 is nor mally retained away from the plate 62 by suitable coil springs70 in such a position as'to co-operate with the pasting die for applying paste to the bottom 60- of the bag. A guide pin 71 is employed for guiding the head 69 toward and away from the plate 62. The rock shaft 64 has secured to its one end beyond the pulley 16 an arm 72 which arm carries a roller g I Drive shaft 12 has slidably mounted on it the cam plate 53 which cam plate is adapted to be actuated longitudinally of the shaft 12 but is not rotatable with the shaft 12. The

cam plate 53 is secured between the bifurcated arm 50 of the bell crank 49.

Shaft 45 carrying cam 57, shafts 11 and 12 carrying the paste die and pressure plate respectively and the cam 53 slidably mounted on shaft 12 are so timed as to cooperate with one another for retracting the pressure head 69 carried by the pressure plate 62.

The operation of the device is as follows: Paper tubes are taken from a suitable stack, not shown, by means of the picker fingers 28 carried by the picker drum 27 and passed between the folding rollers 29 where they are shaped or folded as shown in Fig. 5. The bag passes over the bridge 34 thereby raising the finger 32, oscillating the shaft 31 and raising the lever 35; The raising of the I lever 35 within the elongated perforation 37 permits the dog 39 to hold the cross slide stationary and allow the parts to function normally and deposit a normal amount of paste on the bottom of a bag or sack tube. Now supposin the machine to be in operation and a bag had not yet reached the pasting device and the pasting die and pressure plate were about to contact one another. It is obvious that the pasting die would deposit a quantity of paste on the pressure head 69 which paste would in turn be deposited on the wrong side of the next series of bags thereby rendering said bags. unfit for use. Vith the condition as just described the operation of the device would be as follows, the cam 57, carried by the shaft 45, would move the cross slide ahead sufficiently to relieve the pressure between the end 42 of the dog 39 and stop 43 of the cross slide 44 whereupon the operating finger 32 would depress the bar 36 and raise the dog 42 above the stop 43. Continued rotation ofthe shaft 45 would soon cause the cam 57 to be clear of.

the roller 58 on the cross slide thereby permitting the spring54 to shift the cross slide 44 to the right, as seen in Fig. 1. This movement of the cross slide 44, through the arm 46, would oscillate the bell crank about its pivot and project the cam plate 53, on the shaft 12, into the path of the roller 73 car ried by the arm 72. Continued rotation of the pulleys 15 and 16 would bring the roller 73 into engagement with the'cam plate 53 which would oscillate or rock the rock shaft 64 in its bearings together with the links 65 and 66. Movement of the links 65 and 66 in a counter-clockwise direction would actuate the arms 67 and 68 and retract the pressure head 69 against the yielding pressure of the springs 70. From the foregoing it must be evident that the paste carried by the die 59 would not be deposited upon the pressure head 69 because it has been retracted below the surface of the drum.

Continued operation and rotation of the shafts would again bring the roller 58 into engagement with the cam 57 which would shift the cross slide to its normalposition and retract the cam plate 53 from the path of the roller 73. If a baghas now reached the operating finger 3:2 and has raised it, the dog 39 due to the adjustable counterweights 74 and 75, would fall into the path of the cross slide stop 43 and retain the said cross slide in its normal position.

IVhat is claimed is:

1. In a device of the class described the combination of a frame, a table carried by the frame, a conveyor comprising a pair of shafts in horizontal alignment, the shafts being positioned one on either side of the conveyor, the conveyor receiving a bag tube from the table and conveying a bag intermediate the shafts, a pasting die carried by one of the shafts, a pressure plate carried by the second shaft, an oscillatable shaft mounted in the frame, an operating finger carried by the oscillatable shaft, an inclined bridge secured to the table adjacent the operating finger, the operating finger beingadapted to be raised by a bag tube passing over the inclined bridge, a lever secured to the oscillatable shaft, a bar slidably connected to the lever, a pivotally mounted dog having one end pivotally connected to the bar, a cross slide slidably secured to the frame, the cross slide being adapted to be retained in a normally retracted position by the dog, yieldable means for actuating the cross slide, a bell crank pivotally mounted on the frame and having one end pivotally securedto the cross slide, a cam plate slidably mounted onthe second conveyor shaft and having an operable connection with the second arm of the bell crank, a depressible pressure head carried by the ressure )late and means 0 erable from the cam plate on the second conveyor shaft for depressing the pressure head.

2. In a device of the class described the combination of a frame, a conveyor comprising a pair of shafts, the conveyor adapted to convey a bagtube intermediate the shafts, a pasting die carried by one ofthe shafts, a pressure plate carried by the second shaft co-operating with the pasting die for depositing a quantity of paste on the bag tube, an oscillatable shaft oscillatably mounted in the frame, means carried by the oscillatable shaft adapted to be operated by the bag tube for oscillating the shaft, a lever secured to the oscillatable shaft, a bar slidably connected to the lever, a pivotally mounted dog having one end pivotally secured to the bar, a cross slide slidably mounted on the frame, the cross slide being adapted to be retained in a normally retracted position by the dog, yieldable means for actuating the cross slide, a bell crank mounted on the frame and having one end pivotally secured to the cross slide, a cam plate slidably mounted upon the second conveyor shaft and having an operable connection with the second arm of the bell crank, a depressible pressure head carried by the pressure plate and means operable from the cam plate on the second conveyor shaft for depressing the pressure head.

In a device of the class described the combination of a conveyor comprising apair of shafts between which shafts bag tubes may be conveyed, a pasting die carried by one of the shafts, a pressure plate carried by the second shaft, a depressible head mounted on the pressure plate and adapted for co-operation with the pasting die for applying paste to the bag tubes, a frame, an oscillatable shaft mounted on the frame, means carried by-the oscillatable shaft to be operated by the bag tube, a cam plate slidably mounted on the second conveyor shaft, means operable from the cam plate for depressing the pressure head, andmeans controlled from the oscillatable shaft normally rendering the last mentioned means inoperable.

4. In a device of the class described the combination of a frame, a table carried by the frame, a conveyor for receiving an article from the'table, the conveyor comprising a pair of shafts one shaft being mounted on each side of the conveyor, a pasting die mountedon one shaft, a pressure plate on the other shaft co-operating with the pasting die for applying paste to an article passing over the table, the pressure plate having a dethere is no article to receive the paste, and means for depressing the head.

5. In a device of the, class described, the combination of a frame, a pair of rotatable shafts journaled in the frame, a pasting die carried by one of the shafts, a retractable pressure plate carried by the second shaft, means on the second shaft comprising an arm 1 and connecting links for retracting the pres associated with the operating finger for'preeluding reciprocation of the slide when a continuous feed of blanks is supplied and for releasing the slide when the feed is interrupted, whereby to retract the pressure plate and preclude contact thereof with the pasting die.

o 6. In a device of the class described the combination of'a frame, a pairof shafts rotatably mounted on the frame, a, pasting die on one shaft and a retractable pressure plate on the other, the pasting die being revoluble in a fixed circular orbit, the die and plate being adapted to co-operate for receiving therebetween blanks to be pasted, blank feeding means, means for retracting the pressure 'pressible head adapted to be depressed when plate from a normally extended position, means actuable by a continuous feed of blanks for rendering the retracting means inoperative, and means responsive to a break in the continuity of the feed for releasing the retracting means whereby to retract the pressure plate from proximity with the pasting die.

7. In a device of the class described, the combination of a frame, a pasting die and a retractable pressure plate mounted on the frame and adapted to co-operate for receiving therebetween blanks to be pasted, the pasting die being revoluble in a fixed circular orbit, a pressure plate retracting means, means for feeding blanks to the pressure plate and pasting die, and means, responsive to a continuous feed of blanks, for retaining the pressure plate in extended position, an interruption of said feed serving torender the said retaining means operative for retracting the pressure plate.

8. In a pasting device the combination of a frame, a pasting die and a pressure plate mounted on the frame, the pressure plate being provided with a depressible head adapted to co-operate with the pasting die for receiving therebetween a blank to be pasted, means supporting the pasting die for movement in a fixed circular orbit, means for retaining the depressible head in extendedposition while blanks are continuously fed to the device, and means, operable upon interruption of the blank feed, for depressing the head whereby to preclude contact thereof with the pasting die.

9. In a pasting device the combination of a frame, a pasting element and a retractable pressure element mounted on the frame and adapted to co-operate for receiving therebetween blanks to be pasted, means supporting the pasting element for movement in a fixed circular orbit, and a pressure element retracting means rendered normally inoperative by a continuous feed of blanks to the pasting and pressure elements and operative, upon interruption of the feed, for retracting the pressure element to preclude contact thereof with the pasting element. I

10. An article operated control device comprising in combination an operating finger mounted for rocking movement, the operating finger being moved, by contact with articles continuously fed thereto, to an elevated position, a driven cam, a cross slide having a cam abutting means yieldingly urged toward the cam for reciprocation of the cross slide, a dog for retaining the cross slide in a position substantially retracted from the driven cam, a connecting means cooperating with the dog and operating finger for transmitting to the dog the downward movement of the operating finger resulting from a break in the feed of articles thereto, said movement r GEORGE HARTMAN. 

